1 /* $NetBSD: mainbus.c,v 1.22 2021/04/24 23:36:27 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994,1995 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Brini. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * RiscBSD kernel project 36 * 37 * mainbus.c 38 * 39 * mainbus configuration 40 * 41 * Created : 15/12/94 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.22 2021/04/24 23:36:27 thorpej Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/conf.h> 51 #include <sys/malloc.h> 52 #include <sys/device.h> 53 54 #if defined(arm32) /* XXX */ 55 #include <machine/io.h> 56 #endif 57 #include <sys/bus.h> 58 #include <arm/mainbus/mainbus.h> 59 #include "locators.h" 60 61 /* 62 * mainbus is a root device so we a bus space tag to pass to children 63 * 64 * The tag is provided by mainbus_io.c and mainbus_io_asm.S 65 */ 66 67 extern struct bus_space mainbus_bs_tag; 68 69 /* Prototypes for functions provided */ 70 71 static int mainbusmatch(device_t, cfdata_t, void *); 72 static void mainbusattach(device_t, device_t, void *); 73 static int mainbusprint(void *aux, const char *mainbus); 74 static int mainbussearch(device_t, cfdata_t, 75 const int *, void *); 76 77 /* attach and device structures for the device */ 78 79 CFATTACH_DECL_NEW(mainbus, 0, 80 mainbusmatch, mainbusattach, NULL, NULL); 81 82 /* 83 * int mainbusmatch(device_t parent, cfdata_t cf, void *aux) 84 * 85 * Always match for unit 0 86 */ 87 88 static int 89 mainbusmatch(device_t parent, cfdata_t cf, void *aux) 90 { 91 return (1); 92 } 93 94 /* 95 * int mainbusprint(void *aux, const char *mainbus) 96 * 97 * print routine used during config of children 98 */ 99 100 static int 101 mainbusprint(void *aux, const char *mainbus) 102 { 103 struct mainbus_attach_args *mb = aux; 104 105 if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT) 106 aprint_normal(" base 0x%x", mb->mb_iobase); 107 if (mb->mb_iosize > 1) 108 aprint_normal("-0x%x", mb->mb_iobase + mb->mb_iosize - 1); 109 if (mb->mb_irq != -1) 110 aprint_normal(" irq %d", mb->mb_irq); 111 if (mb->mb_drq != -1) 112 aprint_normal(" drq 0x%08x", mb->mb_drq); 113 if (mb->mb_core != MAINBUSCF_CORE_DEFAULT) 114 aprint_normal(" core %d", mb->mb_core); 115 116 /* XXXX print flags */ 117 return (QUIET); 118 } 119 120 /* 121 * int mainbussearch(device_t parent, device_t self, void *aux) 122 * 123 * search routine used during the config of children 124 */ 125 126 static int 127 mainbussearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 128 { 129 struct mainbus_attach_args mb; 130 int tryagain; 131 132 do { 133 if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) { 134 mb.mb_iobase = MAINBUSCF_BASE_DEFAULT; 135 mb.mb_iosize = 0; 136 mb.mb_drq = MAINBUSCF_DACK_DEFAULT; 137 mb.mb_irq = MAINBUSCF_IRQ_DEFAULT; 138 } else { 139 mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE]; 140 #if defined(arm32) && !defined(EB7500ATX) 141 mb.mb_iobase += IO_CONF_BASE; 142 #endif 143 mb.mb_iosize = cf->cf_loc[MAINBUSCF_SIZE]; 144 mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK]; 145 mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ]; 146 } 147 mb.mb_core = cf->cf_loc[MAINBUSCF_CORE]; 148 mb.mb_intrbase = cf->cf_loc[MAINBUSCF_INTRBASE]; 149 mb.mb_iot = &mainbus_bs_tag; 150 151 tryagain = 0; 152 if (config_probe(parent, cf, &mb)) { 153 config_attach(parent, cf, &mb, mainbusprint, CFARG_EOL); 154 #ifdef MULTIPROCESSOR 155 tryagain = (cf->cf_fstate == FSTATE_STAR); 156 #endif 157 } 158 } while (tryagain); 159 160 return (0); 161 } 162 163 /* 164 * void mainbusattach(device_t parent, device_t self, void *aux) 165 * 166 * probe and attach all children 167 */ 168 169 static void 170 mainbusattach(device_t parent, device_t self, void *aux) 171 { 172 aprint_naive("\n"); 173 aprint_normal("\n"); 174 175 config_search(self, NULL, 176 CFARG_SEARCH, mainbussearch, 177 CFARG_EOL); 178 } 179 180 /* End of mainbus.c */ 181